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Recognised as Colour

#566BCF

  • #566BCF
  • Blue
  • Dark
  • Nearest: Royal blue

#566BCF is a blue with RGB values 86, 107, 207 and HSL 230°, 56%, 57%. It is a dark colour, so white text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#566BCF#566BCF
HEX#566BCF
RGBrgb(86, 107, 207)
RGB (0–1)0.3373, 0.4196, 0.8118
RGB percentages33.7%, 42%, 81.2%
HSLhsl(229.6, 55.8%, 57.5%)
HSV / HSBhsv(229.6, 58.5%, 81.2%)
CMYK58.5%, 48.3%, 0%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,663,695
CSS custom property--colour: #566BCF;

Brightness & contrast

Relative luminance0.16999WCAG 2.x, 0 is black and 1 is white
Perceived brightness117.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.77:1
Contrast with white4.77:1WCAG normal text: AA
Contrast with black4.4:1WCAG normal text: Fail
Greyscale equivalent#6E6E6E
Inverted#A99430

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3978D3no red cones; affects about 1% of men; ΔE 11.8 from the original
Deuteranopia#256ECDno green cones; the most common form, about 1% of men; ΔE 9.8 from the original
Tritanopia#008293no blue cones; rare, and affects men and women equally; ΔE 58.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.77:1WCAG large text: AAA
Contrast with black, large text4.4:1WCAG large text: AA

Named colours

Royal blue · ΔE 11.7Slate blue · ΔE 14.6Medium purple · ΔE 16.6Dodgerblue · ΔE 18.9Cornflower blue · ΔE 19.4Dark slateblue · ΔE 21.6
Nearest named CSS colourRoyal blue (#4169E1)ΔE 11.72, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CFBA56
Analogous#56A7CF, #7E56CF
Triadic#CF566B, #6BCF56
Split complementary#CF7E56, #A7CF56
Tetradic#CF56A7, #CFBA56, #56CF7E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F5F6FC
Lighter +30%#CDD3F1
Lighter +20%#A5B1E6
Lighter +10%#7E8EDA
Darker −10%#364DBC
Darker −20%#2A3D95
Darker −30%#1F2D6D
Darker −40%#141C45
More saturated +25%#3B59EA
Less saturated −25%#717DB4

Channel breakdown

R86
G107
B207
Red86 (33.7%)
Green107 (42%)
Blue207 (81.2%)
Hue229.59°
Saturation (HSL)55.76%
Lightness57.45%
Dominant channelBlue
Hex per channelR 56 · G 6B · B CF

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Every value on this page was computed from “566bcf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.